Door-lock.



H. LVINE.

DooR LOCK,

` APPLICATION FILED MAY-l5, 915- 1 ,283,535. Patented Nov. 5, 1918.

jngll VHARRY'Lnvnvr, on oHIoAGo, ILLINOIS,

noon-Lock.A p

Application led May 15, 1916. Serial No. 97,723.

To all whom t may concern.'

Be it known that I, HARRY LEVINE, a subject of the Czar of Russia, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Door-Locks, of which the following is a specication.

My invention relates toimprovements in door latches, and has for its object the provision of an improved construction of this character, especially adapted for permitting a partial opening of the door, preparatory to a full opening thereof.

The invention consists in theV combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specication, and in which,

Figure 1 is a horizontal section taken through the swinging edge of a door, illustratinga door latch embodying my invention, in position of use,

Fig. 2, an interior face View of the latch, and

Fig. 3, a section taken on line 3 3 of Fig. 1.

The preferred form of construction, as illustrated in the drawings, comprises a vlatching frame 4 let into and secured to the door frame 5 of an ordinary swinging door 6, in operative relation with the swinging edge of said door. The inner side 7 of the latching frame 4 is provided with an extension 8 passing across the swinging edge of the door, when in closed position, and bent angularly around the inner corner of the door frame 5, as indicated in Fig. 1. A latching bar 9 is slidably mounted in frame 4, and is normally held in retracted position by means of a tension spring 10 secured to said frame and to said bar, to permit of inward sliding of the bar against the tension of said spring. The inward end 11 of the bar 9 is offset, as indicated, to pass the swinging edge of the door 6, and is provided with a latching opening or notch 12 adapted to receive the latch bar 13 of an ordinary spring latch 14 secured to the inner side of the door 6. A notch or opening 15 is formed in the extension 8 to register with the opening or notch 12, and a guiding or guard tongue 16 is arranged oposite the lopening `15 to compel the latch 13 to clear vthe extension 8, when the door is swung inwardly. y

By this arrangement, it will be observed, that upon inward swingingV of the door 6, the latching bar 9 will-be withdrawn from the frame 4 for a certain distance, thus permitting a View through the partially open door, but preventing the complete opening ofthe door. Vhen it is desired to completely open the door, the latch bar 13 may be readily released from the notch 12 when desired.

A positive latch 17 is slidably mounted on the angularly bent portion of extension 8 by means of rivets 18 engaging through a slot 19 therein. Latch 17 is provided with an operating bead or lip 2O and so arranged that the edge21 thereof may be readily placed in the path of movement of theeX- tension 11, so as to positively lock the door in closed position, and prevent even a partial opening thereof.

While I have illustrated and described the Y preferred form of construction for carrying mv invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

.rtsi-Mins PATENT Specification of LettersiEatcnt.4 fpatented 5,1918. p

I-Iaving described my invention what I claim as new and desire to secure by Letters Patent is:

1. The combination with a door frame and a door therefor, of a latching frame let into said door frame in operative relation with the swinging edge Vof said door; a latching bar slidably mounted in said latching frame to move with said door, there being a latching opening in the outer end of said latching bar adapted to receive a latch, there being also an opening Vin the frame to register Ywith the opening in the latching bar; and a guiding tongue opposite said opening in the frame arranged to compel a latch to clear the same, substantially as described.

2. The combination with a door frame and a door therefor, of a latching frame let into said door frame in operative relationV with the swinging edge of said door; a

latching bar slidably mounted in said latch- A ing frame to move with said door, there being n lathing opening in the outei` end In testimony whereof I have signed my of said latching bar adapted to recelve a name to this specification in the presence 10 latch, there being also an opening in the of two subscribing Witnesses.

frame to register with the opening in the bitching bar; and a slideble latch slidably HARRY LEVINE mounted on d latehing frame and ar- Witnesses:

ranged to engage the end of said latching JOSHUA R H. POTTS.

bai', substantially as described. HELEN F. LILLIS.

Copies of 'this patent may be obtained for five cents each, by addressing the Commissioner oi' Patents,

Washington, D. C. 

